Sleep score breakdown: why eight hours alone is not enough

People trust sleep products less when they see a strong score after a messy night or a weak score after a long sleep. That usually happens because the scoring model is too shallow or too hidden.

Moon should avoid the trap of rewarding raw duration alone. Eight hours with repeated wake-ups, poor timing, or very low sleep efficiency should not look like a perfect night.

A more credible score combines at least four layers: duration, efficiency, regularity, and stage balance or recovery proxies. Even if the model gets more advanced later, the user needs a readable explanation of what changed.

That is the product opportunity for Moon. The score page can act like a mini report, not just a headline number.

Trust is not only about mathematical accuracy. It is also about narrative accuracy. Users want the app to sound sensible when a night was late, fragmented, or inconsistent.

That means every low or high score on Moon should be traceable to a few clear reasons. When the explanation is coherent, the score becomes useful instead of decorative.